<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>04_文字处理</title>
    <style>
        p{
            font-size: 20px;
            font-family: "黑体","宋体";
        }
        a{
            text-decoration: underline;
            text-decoration: overline;
        }
    </style>
</head>
<body>
<p>我是测试文字 123 ABC abc</p>
<a href="#">我是超链接</a>
<div class="d">我是div</div>
<span>我是行内分区元素</span>
<h4>我是标题</h4>
</body>
</html>